- 2025–2027 Factory-verified
only in: Luxury trims (S); Professional Vehicle (S)
E20 Factory-verified
Also documented for ChevroletGMCPontiac
Documented applications
- 2026–2027 Factory-verified
Luxury, Premium Luxury: S
This page aggregates every documented appearance of E20 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.